Fullstack Engineer

Technologies we use

Expected

• .NET
• ASP.NET Core
• C#
• SQL
• Azure SQL
• Microsoft SQL Server
• Terraform
• Azure DevOps
• xUnit
• Playwright
• Jest
• Vitest

Optional

• React
• TypeScript
• Azure Data Factory
• Databricks
• Microsoft Power BI
• Bicep
• Razor
• WinForms

Operating system

• Windows

About the project

You’ll work in Agile sprints, contributing across multiple apps and shared libraries in a hands-on role. Expect to move between feature delivery and infrastructure automation, making this a true full-stack position that touches all layers of the stack.

Sounds like your kind of challenge?

This is how we organize our work

This is how we work

• at the client's site
• agile

Your responsibilities

• Design and implement backend services and APIs in .NET 9, applying Clean Architecture principles
• Build and maintain React + TypeScript microfrontends using a shared UI library with Module Federation
• Manage MSSQL / Azure SQL schemas, write/tune T-SQL and EF Core queries
• Author Terraform IaC templates (modules, state, multi-environment provisioning) for Azure resources
• Implement and optimize Azure DevOps CI/CD pipelines (YAML-based)
• Secure APIs using OAuth2/JWT, Azure AD (Entra ID), and Key Vault for secrets management
• Instrument services for observability (Application Insights, Serilog structured logs), add health checks and alerts
• Read and refactor legacy .NET and T-SQL logic for incremental migration
• Write automated tests: unit, integration, API, and end-to-end coverage
• Troubleshoot and fix production incidents, enhancing operational stability
• Actively participate in Agile ceremonies, estimate stories, review PRs, and contribute to best practices
• Note: Detailed project information will be shared during the recruitment process.

Our requirements

• 5+ years of commercial full-stack experience with .NET (6+/9), ASP.NET Core, and C#
• Strong EF Core and SQL (Azure SQL / MSSQL) skills (query tuning, indexing, transactions, stored procedures)
• Hands-on Azure experience – App Service, Azure SQL, Storage Account, Key Vault, Service Bus / Functions
• Solid Infrastructure-as-Code expertise with Terraform
• CI/CD pipelines experience in Azure DevOps (YAML build/release, environment promotion)
• In-depth understanding of REST API design and security (OAuth2, JWT, OIDC)
• Automated testing (xUnit, Playwright, Jest/Vitest) and TDD practices
• Observability and logging tools: Application Insights, Serilog
• Good Git practices, PR reviews, and agile team collaboration
• Fluent English (B2+) proficiency for technical collaboration

Optional

• Production experience with React + TypeScript
• Knowledge of Azure Data Factory, Databricks, Power BI
• Familiarity with microfrontends / Module Federation
• Event-driven integrations (Service Bus, Event Hubs)
• Docker/Kubernetes (AKS), ARM/Bicep templates
• Experience modernizing monolithic UIs (e.g., Razor, WinForms)
• Azure Certifications (AZ-204, AZ-400) or HashiCorp Terraform Associate

What we offer

• Flexible cooperation model
• Hybrid work setup – 2 days a week from the office in Kraków
• Collaborative team culture – work alongside experienced professionals eager to share knowledge
• Continuous development – access to training platforms and growth opportunities
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment – laptop and essential software provided

This is how we work on a project

• TDD
• Continuous Deployment
• Continuous Integration
• DevOps
• issue tracking tools
• test automation
• testing environments

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• life insurance

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.

Mindbox Sp. z o.o.

At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.

Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.